IONICS
·
2020
·Vol. 26
·期 8
·3901-3909
·
IF 2.394
Li Mei,Sun Zhongxuan,Guo Dan,Han Wei,Sun Yang,Yang Xiaoguang,Zhang Milin
The electrode reaction of Pr(III) and coreduction of Pb(II) and Pr(III) were studied on an inert W electrode in eutectic LiCl-KCl to extract Pr from molten salt. The electrode process kinetic of Pr(III) on W electrode was firstly explored employing cyclic voltammetry (CV) and Tafel technique, such as the diffusion coefficient of Pr(III) in eutectic LiCl-KCl and the exchange current density ( j 0 ) for Pr(III)/Pr(0) couple and the electrode reaction activation energy. Then, various electrochemical techniques were used to investigate the coreduction of Pb(II) and Pr(III). Four cathode current peaks ascribed to the formation of Pr x Pb y intermetallic compounds were detected, which indicated that the Pr could deposit on pre-deposited Pb film, react with Pb, and form Pr x Pb y intermetallic compounds. Furthermore, the electrolytic products formed by galvanostatic electrolysis were characterized by scanning electron microscopy coupled with energy dispersive X-ray diffraction, which illustrated the formation of PrPb 3 intermetallic compound in LiCl-KCl-PbCl 2 -PrCl 3 melt.
研究领域:
化学
·
材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jiyan Li,Guoyu Xing,Min Qiao,Silu Du,Tao Zhou,Shuo Gao,Hanxue Sun,Rui Jiao,An Li
Solar-driven atmospheric water harvesting (SAWH) has been recognized as a promising strategy to alleviate the freshwater crisis. Herein, we developed an efficient porous polymeric foam, LiCl@CCP-PPy, which has low preparation cost, strong adaptability and portability, and is very suitable for use as a wicking material in SAWH systems. LiCl@CCP-PPy contains abundant –NH 2 and –OH groups. These hydrophilic groups and excellent pore structure (porosity is 80.22 %) make it have a good moisture absorption effect even in low humidity environment. The moisture absorption capacity can reach 2.86 g/g at 35 % RH and 25 °C, and 4.48 g/g at 25 °C and 90 % RH. The saturated water absorption effect was 27.48 g/g. LiCl@CCP-PPy can be scaled up for production. In addition, LiCl@CCP-PPy has a high light absorption rate of more than 90 %, and the strong photothermal conversion ability of Polypyrene (PPy) enables the material to warm up rapidly under natural light, thereby accelerating the desorption process (96 % desorption rate at 1 kW/m 2 for 3 h). Based on the above properties, LiCl@CCP-PPy was applied to the Tengger desert in northwest China. The final water production efficiency was 0.64 L/m 2 /d, and the collected water quality met the international drinking water standard.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Guo Chenyue,Tang Huajie,Wang Pengfei,Xu Qihao,Pan Haodan,Zhao Xinyu,Fan Fan,Li Tingxian,Zhao Dongliang
Harvesting electricity from ubiquitous water vapor represents a promising route to alleviate the energy crisis. However, existing studies rarely comprehensively consider the impact of natural environmental fluctuations on electrical output. Here, we demonstrate a bilayer polymer enabling self-sustaining and highly efficient moisture-electric generation from the hydrological cycle by establishing a stable internal directed water/ion flow through thermal exchange with the ambient environment. Specifically, the radiative cooling effect of the hydrophobic top layer prevents the excessive daytime evaporation from solar absorption while accelerating nighttime moisture sorption. The introduction of LiCl into the bottom hygroscopic ionic hydrogel enhances moisture sorption capacity and facilitates ion transport, thus ensuring efficient energy conversion. A single device unit (1 cm 2 ) can continuously generate a voltage of ~0.88 V and a current of ~306 μA, delivering a maximum power density of ~51 μW cm −2 at 25 °C and 70% relative humidity (RH). The device has been demonstrated to operate steadily outdoors for continuous 6 days.
研究领域:
材料科学
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能源技术
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2022
·
IF 19.069
Kun Zhang,Ling Cai,Azadeh Nilghaz,Guangxue Chen,Xiaofang Wan,Junfei Tian
A promising strategy to use alkali and alkaline earth metals chloride as an ideal high-efficiency atmospheric moisture catcher has been introduced in hygroelectric generator (HEG) engineering. However, the achievement of high output power density for commercial electronics by most HEGs is challenging. To address this issue, a novel approach is proposed to generate highly efficient HEGs. The approach relies on the use of carbon black (CB) ink to modify the surface of wood sponge with an LiCl solution, and copper electrodes to generate a highly efficient device with the power output of 216 μW. Specifically, the primary battery system composed of Cu electrodes and CB ink in water interface can compensate for decrease in streaming potential to further improve the output performance of the system, and successfully solve the problem of low output power of HEGs as an independent power source. Furthermore, the influences of different electrodes on electricity generation are comprehensively and systematically investigated for the first time. Moreover, the open-circuit voltage ( V OC ) of a HEG can be boosted to 33 V by simple integration in series, and it can drive commercial electronic devices in various weather conditions. It is anticipated that this new approach will facilitate the growth of green electronics in the future.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2024
·
IF 15.8
Chenyang Cai,Yi Chen,Fulin Cheng,Zechang Wei,Wenbin Zhou,Yu Fu
Harvesting atmospheric water and converting it into electricity play vital roles in advancing next-generation energy conversion systems. However, the current water harvester systems suffer from a weak water capture ability and poor recyclability due to high diffusion barriers and low sorption kinetics, which significantly limit their practical application. Herein, we drew inspiration from the natural “Pump effect” observed in wood and successfully developed a dual “absorption–adsorption” networked MXene aerogel atmospheric water harvester (MAWH) through ice templating and confining LiCl processes, thereby serving multiple purposes of clean water production, passive dehumidification, and power generation. The MAWH benefits from the dual H-bond network of MXene and cellulose nanocrystals (absorption network) and the hygroscopic properties of lithium chloride (adsorption network). Furthermore, its aligned wood-like channel structure efficiently eliminates water nucleation near the 3D network, resulting in fast moisture absorption. The developed MAWH demonstrates a high moisture absorption ability of 3.12 g g–1 at 90% relative humidity (RH), featuring rapid vapor transport rates and durable cyclic performance. When compared with commercial desiccants such as the 4A molecular sieve and silica gel, the MAWH can reduce the RH from 80% to 20% within just 6 h. Most notably, our integrated MAWH-based water harvesting–power generation system achieves a high voltage of ∼0.12 V at 77% RH, showcasing its potential for practical application. These developed MAWHs are considered as high-performance atmospheric water harvesters in the water collection and power generation field.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Yanxia Chao,Ying Li,Huibin Wang,Nan Wang,Tao Wang,Zhuangzhuang Chu,Zhuohong Yang,Yang Hu
With the rapid development of flexible wearable electronics, conductive hydrogels acting as flexible sensors have attracted increasingly extensive attention. Although significant progress has been made in designing and constructing hydrogel-based sensing devices, it is still a challenge to realize facile and fast preparation, long-term stability at extreme temperatures, high sensitivity and versatility at the same time in a conductive hydrogel. Herein, we report a facile metal ion catalytic strategy to quickly construct lithium chloride (LiCl)-doped conductive multiple-crosslinked (PSL) hydrogels, which are composed of a chemically crosslinked polyacrylamide network and interconnected long chains of polyethyleneimine and silk fibroin via physical crosslinking interactions. The obtained PSL hydrogels can achieve favourable tensile properties (141.75 kPa strength, 719.25% strain and 431.58 kJ m−3 toughness), high transparency (over 85%), outstanding adhesion behavior and repeatability towards various substrate materials. Interestingly, the introduction of LiCl can notably accelerate hydrogel formation at room temperature (within 30 s). Meanwhile, hydrogen bonds between LiCl and water molecules evidently elevate the moisturizing and antifreezing abilities of the hydrogel. Importantly, PSL hydrogel-based wearable strain sensors show high sensitivity, broad detection ranges and the capability to monitor human movements of elbows, wrists, fingers, knees and throats, demonstrating its application potential in the new generation of flexible wearable electronics.
研究领域:
材料科学
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生物医学工程
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柔性电子学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2022
·
IF 9.221
Qiuni Zhao,Zaihua Duan,Yingwei Wu,Bohao Liu,Zhen Yuan,Yadong Jiang,Huiling Tai
Power generation humidity sensor has attracted attention in recent years due to its great potential in self-powered electronics. Herein, combining with the working mechanisms of primary battery and humidity sensor, we propose a facile primary battery-based device (PBD) with dual functions of humidity sensing and power generation, which is fabricated by copper adhesive tape (as positive electrode), lithium chloride (LiCl) active layer (for adsorption and conduction), and aluminum adhesive tape (as negative electrode) on the ceramic substrate. By regulating the concentration of the LiCl, 1.0 mol/L LiCl-based PBD can be developed as a humidity sensor, which exhibits a sensitivity of 4.86 mV/RH and good linearity in a wide detection range (10.9%−91.5% relative humidity) at room temperature (25 °C). Moreover, 2.0 mol/L LiCl-based PBD can be developed as a power generator due to its high output of 0.55 V. Finally, multifunctional applications (such as respiratory monitoring, non-contact switch, lighting light-emitting diode (LED)) of the PBDs are demonstrated. This work not only provides a facile avenue to develop dual-function devices, but also exhibits a great potential in self-powered humidity sensors.
研究领域:
材料科学
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传感技术
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2020
·Vol. 167
·期 14
·142505
·
IF 3.721
Wei Han,Wenjuan Wang,Mei Li,Yangyang Meng,Wenjing Ji,Yang Sun
To recover Gd from LiCl-KCl eutectic, the coreduction mechanism of Gd(III) with Pb(II) was investigated using electrochemical methods. The formation potentials related to the formation of three Gd-Pb intermetallics were detected by cyclic voltammetry, square wave voltammetry and chronopotentiometry, and the formation mechanism of Gd-Pb compounds could be described as xPb(II) + 2xe− = xPb. Meanwhile, the electroreduction of Gd on liquid Pb electrode was explored. The diffusion coefficient of Gd metal in liquid metallic Pb was determined by anodic chronopotentiometry. The kinetic parameters of Gd(III)/Gd(in Pb) couple in the temperature range from 723 K to 873 K were determined employing linear polarization (LP) method. Based on the relationship of exchange current density and temperature, the reaction activation energy was estimated to be 23.17 kJ mol−1. In addition, the recovery of Gd from molten salts was performed assisted by liquid Pb electrode by constant potential electrolysis (CPE) and constant current electrolysis (CCE). The products characterized using XRD, SEM with EDS are comprised of GdPb3 and Pb phases. The concentration change of Gd during CCE process was monitored by ICP-AES, and the recovery rate was estimated. The results showed that Gd concentration decreased and recovery rate increased with the duration.
研究领域:
材料科学
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电化学工程
✓ 已验证
DOI
高影响因子
FLUID PHASE EQUILIBRIA
·
2014
·
IF 2.241
Xuehong Zhao,Shu’ni Li,Quanguo Zhai,Yucheng Jiang,Mancheng Hu
This article deals with the mean activity coefficients of LiCl in amide–water mixtures with both ɛ -increasing co-solvent (urea–water, N -methylformamide–water), and ɛ -decreasing co-solvent ( N , N -dimethylformamide–water, N , N -dimethylacetamide–water) systems at 298.15 K by potentiometric method. Meanwhile, thermodynamic properties including the osmotic coefficients, the excess Gibbs free energy, the standard solubility product, the primary LiCl hydration number and the standard free energy of transference from water to the mixtures were also calculated. The nonideal behavior of these systems has been discussed in terms of the Pitzer, the Modified Pitzer and the extended Debye–Hückel equations parameters.
研究领域:
物理化学
·
溶液化学
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Weixiong Dong,Tiantian Ren,Haiyan Tao,Shuping Jia,Guihua Meng,Jianning Wu
In recent years, solar-powered highly hygroscopic lithium chloride-modified gels were developed based on adsorptive atmospheric water harvesting (SAWH), an attractive method for obtaining fresh water from the atmosphere. In order to enrich the atmospheric water collection materials and obtain high-performance atmospheric water collection materials, an SAWH composite material, LiCl (PAA-CMC-Na/DA-rGO@LiCl), with high efficiency, high stability, and low energy consumption has been designed and successfully prepared. The material consists of sodium carboxymethyl cellulose (CMC-Na) with high swelling performance and acrylic acid (AA) as the hydrophilic hydrogel network, dopamine-reduced graphene oxide (DA-rGO) as the solar-thermal conversion medium, and high hygrometric lithium chloride (LiCl) as the hygrometric salt at low relative humidity (RH). A high water adsorption performance was obtained, with a water adsorption capacity of 0.819–3.019 g·g–1 after 12 h under a wide humidity range of 30%–90% RH. At 1 kW·m–2 light illumination (1 kW·m–2 is proportional to 1 sun), the surface temperature of the gel reached 69.5 °C after 60 min, and 79.1% of the adsorbed water was released, showing good solar-thermal conversion and water desorption performance. The material was cycled 10 times, which proved that the composite hydrogel had good performance stability.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 32
·15859-15867
·
IF 9.931
Liangdong Lin,Feng Liang,Kaiyuan Zhang,Hongzhi Mao,Jian Yang,Yitai Qian
Lithium metal has been regarded as an ideal anode material for high-energy-density batteries. However, its high chemical reactivity, virtually infinite volume change and dendrite growth greatly reduce coulombic efficiency and increase potential safety hazards, thereby limiting its practical performance. Here, Li3P/LiCl-coated Li was successfully prepared by a simple reaction between PCl3 and Li at room temperature. Li3P, as a Li-ion conductor, reduces interface impedance and improves the electrochemical kinetics. LiCl, as the minor phase, enhances Li diffusion at the interfaces and reinforces the Li metal protection together with Li3P, suppressing the formation of Li dendrites. Thus, cycle stability and rate capability are greatly improved, as demonstrated both in symmetric cells and in the Li//LiCoO2 and Li//S full cells.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2024
·
IF 5.8
Yupeng Lv,Yecheng Xu,Wenmin Yang,Changjiang Sun,Guiying Li,Zhen Fang,Zhuhui Qiao
The popularity of conductive hydrogels in flexible sensor research stems from their excellent strain responsiveness and efficient conduction capability. In this study, maleic anhydride (MA)-modified soy protein isolate (MSPI) crosslinked with acrylamide (AM) to form a hydrogel with a tensile strength of 225 kPa at an MSPI content of 16 %. Furthermore, the incorporation of 15 % of lithium chloride (LiCl) significantly enhanced the electrical conductivity of the hydrogel (namely MSPI 0.16 Li 0.15 ), mechanical strength (tensile stress ∼ 238 kPa with a fracture strain of 241 %) and swelling resistance. MSPI 0.16 Li 0.15 presented a high conductivity of 2.8 S/m, surpassing that of a plethora of bio-based hydrogels. Additionally, MSPI 0.16 Li 0.15 was successfully employed to monitor the movement of fingers, elbows, knees and other joints, and can successfully maintain strain sensing under different pH conditions (pH 1, 3, 5, 9, 11 and 13) and organic solvents. It demonstrated distinct electrical responses to various strains, making it suitable for sensing human motion. This work contributes to the development of hydrogels with enhanced electrical conductivity and mechanical properties, promising applications in the field of flexible sensors.
研究领域:
材料科学
·
生物医学工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）